One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,9,6,10,4,8)(3,11,12,7,14,15,13,16)(17,18)(19,28,32,24)(20,33,35,40)(21,36)(22,26)(23,27)(25,34,41,37)(29,44)(30,39,31,43)(38,45)(42,47)(46,48)(1,3)(2,7)(4,12)(5,13)(6,14)(8,15)(9,11)(10,16)(17,19,23,32)(18,24,27,28)(20,29,35,46)(21,30,22,31)(25,38,41,42)(26,39,36,43)(33,48,40,44)(34,45,37,47)(17,20)(18,25)(19,29)(21,34)(22,37)(23,35)(24,38)(26,40)(27,41)(28,42)(30,45)(31,47)(32,46)(33,36)(39,44)(43,48) involution — undirected(1,4,6,5)(2,8,10,9)(3,12,14,13)(7,15,16,11)(17,21,23,22)(18,26,27,36)(19,30,32,31)(20,34,35,37)(24,39,28,43)(25,40,41,33)(29,45,46,47)(38,44,42,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.